Institute of Environmental Remediation and Human Health, College of Ecology and Environment, Southwest Forestry University, Kunming 650224, China. Southern Federal University, 105, Bolshaya Sadovaya Street, Rostov-on-Don 344006, Russia. Institute of Physicochemical and Biological Problems of Soil Science, Russian Academy of Sciences, Pushchino 142290, Russia. Department of Integrative Biology, University of Colorado Denver, Denver, CO 80217-3364, USA. Institute of Environmental Microbiology, College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou, China. Institute of Soil and Water Resources and Environmental Science, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou 310058, China. Department of Plant Physiology, University of Bayreuth, 95440 Bayreuth, Germany. Electronic address: stephan.clemens@uni-bayreuth.de. Institute of Environmental Remediation and Human Health, College of Ecology and Environment, Southwest Forestry University, Kunming 650224, China; Institute of Environmental Microbiology, College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou, China. Electronic address: rensing@fafu.edu.cn.